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Re: [Killietalk] annualism



Another question is what if the assumed gene, assuming its a gene at all that triggers eggs hatch, is connected with other inherited genetic deformation? My comment is not to embark on a long, and questionable road of conjecture regarding Genetics, but to suggest that nature, in most of its peculiarities are, in design.
Markus



----- Original Message ----- From: "Brian R. Watters" <bwatters at sasktel_net>
To: "killifish discussion list" <killietalk at aka_org>
Sent: Sunday, January 23, 2005 2:00 PM
Subject: RE: [Killietalk] annualism



CynoNotho at aol_com wrote:


..............By using only those eggs that hatch out at first wetting, hobbyists could develop the gene(s) annuals have to hatch in a shorter time frame and eliminate the longer cycle gene(s) from the domestic pool. Eventually, by only wetting peat the first time; essentially, all the annual eggs in a spawn would be utilized and a very short hatching cycle be genetically fixed.


This begs the question that I often ask of those who advocate rapid
development of Notho eggs by water incubation and/or very high storage
temperatures - why is it desirable to shorten the incubation time of Nothos
?


Personally, I find long incubation times a distinct advantage in that it
gives me much greater flexibility with regard to maintaining a lot of
species. With longer incubation times the "window of opportunity" for
hatching is greater and I am not frantically trying to hatch out everything
I maintain at the same time.


Furthermore, having long and variable incubation times, and being able to
rewet the peat and perhaps get a later hatch, provides the opportunity to
try again should one have a disaster with the first hatching.
___________________________________________
Brian R. Watters
University of Regina
Regina, Sask. S4S 0A2, Canada
Ph: (306) 584-9161 (home); (306) 585-4663 (work)
Fax: (306) 585-5433
E-mail: bwatters at sasktel_net


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